<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=h">
    <title>案例</title>
    <link rel="stylesheet" href="../public/css/index.css">
</head>
<body>
    <h1>主页</h1>
   
    <h2>二级标题</h2>
    <h3>三级标题</h3>
</body>
</html>